SYNTHESIS AND CHARACTERIZATION OF LUMINESCENT LA1-XEUXPO4 NANOPARTICLES THROUGH THE EPOXIDE ROUTE

MATIAS JOBBÁGGY; VÍCTOR OESTREICHER ; PAULA F. BOROVIK; BARJA, BEATRIZ C.

Buenos Aires

Simposio; Exploring the Frontiers of Chemistry: Challenges for the 21st Century? Chemistry symposium; 2020

FCEN - UBA University of Buenos Aires - Ben-Gurion of the Negev University (Israel

Lanthanum phosphate nanoparticles partially substituted with variable contents of Eu(III), La1-xEuxPO4, constitute promising luminescent agents with exceptional chemical stability in physiological media. Herein we introduce the preparation of these particles under mild conditions, by means of epoxide driven alkalinization, in order to achieve controlled size, morphology and crystalline structure. By tuning the rate of alkalinization, the solvent polarity and its viscosity, the concentration of reagents and the eventual use of capping agents, this approach offers pure phases of controlled texture and high purity. Moderate thermal treatments, that allow the massive dehydration of the parent phases, while preserving the parent nanometric texture, enhanced the luminescent properties of the resulting nanoparticles. A comprehensive screening of the effect of texture and the thermal treatment conditions over the observed luminescence is discussed in terms of the Eu(III) coordination environment.